Locomotive-boiler furnace.



C. B. MOORE.

LOCOMOTIVE BOILER FURNACE.- APPLICATION FI LED DEC-18,191].

Patented May 4, 1915.

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c. B. MOORE.

, LOCOMOTIVE BOILER FURNACE.

APPLICATION FILED vac. 18, I911.

1,138,038. Patented May 4, 1915.

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' 7 Inventor $3 2K I lza'rlcsfiflqore omez ' i sheets, and parts UNITED STATESQPATENT OFFIOE.

cmiims B. moon, or nvansron, ILLIINOIS, assreuon, sir-mam ASSIGNMENTS,

romnmcan ARCH COMPANY, or NEW YORK, N.

Y.', CORPORATION OF DELA- WARE. i

LOCOMOTIVE-BOILEB FURNACE. V 1,138,03. Specification of Letters Patent. Patented May 4 1915;

Application filed December'18, 1911'. SeriaINo. 666,841. I

Toalil'whom it may concern: v 1

Be it known that 1', CHARLES B. Moons, a citizen of the, United States, resident of Evanston,'in the county of Cook and State. of Illinois, have invented certain new and useful Improvements in Locomotive-Boiler Furnaces, of which the following is a specification.

My invention relates to locomotive bo ler furnaces and has particular reference to refractory baflles, walls or so-called arches for oxes.

locomotive fire p It is well known that-it enhancesthe eflia I ciency of locomotive'boilers to equip their fireboxes with so-called water-circulating tubes. These tubes usually extend from the lower portion of the fire sheet rearwardly and upwardly to the upper portion of the rear sheet of the fii'ebox. Some locomotives are so designed that it is possible to equip them with only two of these tubes, on account of the shallowness of the throat sheet due to the nearness of thelower row of flues to the grate. In such instances the circulating tubes are usually arranged one at either side of the firebox, and the special object of my invention is to provide a refractory arch particularly adapted for installation and use in such fireboxes. a

A further object of my invention is to chanted to this specific structure and location provide an arch of light construction adapted to fulfil the above conditions, and one which will not only i of gases from the 35 strata and layers of retard 'or check the flow grate to'the flues, but will and intermingle the various gases and deflect and direct them on many intersecting lines through the firebox, to the end that substanal'so break up T tially' perfect combustion may be established and maintained-in the firebox, and also that the combustible gasesand fuel particles may be 'completelyjoxidizied before they escape through the flues.

A-still further object is to provide an arch aving the above characteristics which shall be built of a minimum number of brick forms or patterns, arranged to be supported upon the two tubes Without the necessity of providing supporting lugs upon the side of which may be removed for repairs without disturbing the balance of the arch. I

My invention consists in the several novel constructions and the combina tions and relations of parts hereinafter set forthand detudinal-detail SQGtlOIlfll view the line 6-6 ofFig. 1.

extend from the lowe scribed and particularlypointed out in the appended claims; and will be readily under- In these drawmgs which form a part of v this specification; Figure 1 is a plan secstood upon reference to the accompanyingtlonal view of a locomotive firebox provided with an arch constructed in accordance with my invention and taken on the line 1'1 of 1g. 2 is a vertical tu ilial section of the firebox and. arch on the line 22 of ;Fig. ,1;" -Fig. 3 .is a vertical itran verse sectional view on the line of; Fig. .I; Fig. 4 is adetail'transverse sectional view of the arch onthelihe H of Fig. 1;

Fig. 5 .is a section similar toi'Fi-g. 4 taken on the line 5-'-5 of Fig. 1.;and Fig. 6is a longiof the arch on:

central longi- I Mygmvention may beembodied inarch'es I of varying detailsiof construction and locathe 'invention zto a tends fromside= sheet toside sheet of the firebox, and which practicallyabut's the flue tioninthe firebox; I- have, however, confined the illustrations of I so-called refractory front arch which-exsheet, but I desire that it'shall be'understood-that my invention is not confined or of arch. I A locon otive firebox, as shown in" the drawings, s made upof a flue sheet-.2, the side sheets 3, 3, the, crown sheet 4'and the rear sheet 5. The firebox is equipped with a grate 6 at its lower end. The rear sheet contains the fiuc door or opening 7. The flues 8 lead 'fOIWilldfIOll'l'thG flue sheet.

arch same being inclined wardly from-the flue sheet. As'usualthey part or the flue sheet to the upper part of the rear sheet 5 and serve to increase the circulation of water between the front. and rear water legs of the boiler. These tubes are-quite widely sepalower.

rated on'account'of the nearness of the lines to the grate, andfinynovel construction of arch is particularly adapted for bridging, covering or'arching the space between these Widely separated tubes with a refractory body which depends-upon the tubes for its support.

and especially 'along the whole. length of difficulty pass through the furnace door.

the crown sheet. Such an arch or baflle, As the cover or panel bricks have no weight which is composed of comparatively light to support, and are'subjected to little if aux or thin members, quicklyattains the maxlstrain, they may be both thin and light.

mum heat of the firebox','when the boiler'is desirable quality of arches of this character A being put into commission, and as quickly is thattheyshall wear out evenly and, as so loses itsheat' when the fire is drawn. Both the supporting bricks necessarily bear theof these features are valuable in that the brunt otthe scouring action cf thecinders steaming qualities of the boilerare increased and 'fuel particles, the cover bricks being and when the-fire is drawn there is not a somewhat protected from this e'fl'ect, the i great mass of highly heated firebrick to concover bricks may be made considerably Slit tinue the production of steam when it 1slighter than the supporting bricks and yet K not required. 'Further, the thin'walls, .probe as long-l ved. Being made up of small jections or ribs on the arch quickly attain un 1ts or individual pieces, myarch canbe v incandescence and thereby aid the ignition built'with a minimum expenditure of time in. ofthe gases and fuel particles and enhance and labor, and being madeupi'dfindividuall the production of perfect combustion. flsupported sections, the "whole of the arch I build my arches of a number of refrac-' need'not'be taken down to efiect repair-011;

, tory parts or sections so disposed or arany one portion of the firebox. ranged as to present a lar e superficial area Another advantage inherent in'thisform' or ignition surface, and a so to enhancethe of arch results from the overlapped jointsretarding and admixing effects of the arch between the supporting and n l. bri k fi upon the gases of combustion' These oints are to a great extentdprotec In carrying out my invention I employ a fro'm'the fusing action f the slag' formed considerable number of independent refracin the-firebox and the arch does not become a, f tory bricks" generally of several difierent rigid mass, but. is what might be termed shapes and assemble them in'a way to secure flexible in that it accommodateitself the advantages above enumerated and others .to slightchanges in form,.shape' and dimenhereinafter mentioned. ,sion'=of the fireboxwithout being broken up.

A special feature of my inventionresides or disintegrated. I 1 7 in a refractory arch which occupies; an in- In the form of my invention, as illustrated-mp clinedposition in the firebox, and ismade; in the-drawings, the arch consists of two upv of twopartieular kinds of bricks, the one 4 spans or rows of supporting bricks a, sepakind'being supportingbricks or spans that ratedlfongitudinallyin the firebox and held are supportedfby the arch tubes 9 and which in proper-relative position by means of a.

are separated by considerable. spaces, and row ofcolver. or panel bricks b. In this par- 1 the otherkind being thin cover or panel ticula'r iirch the tubes 9 are substantially bricks that rest on the supporting bricks and midway between the center of the firebox substantially and practically close the spaces and there'spectiveisheet 3 and each of the between them; I usually make the support spans or rows of supporting bricks comi ing bricks deeper or thicker'than the panel rises a center section and two end sections. F bricks and it will be readily seen that this Ihe center sectioniscomposed of two of the a "construction provides cavities or gas mixing supporting bricks}; the combined length of pockets upon the under surface of thearch which is greater than the distance between irrespective of the shapeof the" individual" the tubes. 'These bricks form a self-supportr bricks themselves and I add to the efiectiveing ar'ch'or span resting upon and extcndness of the arch by inclining parts of the ing between the tubes. These center span arch at different angles .transverselyoi the :brieks abut midway between tubes and are firebox thereby providing "surfaces which preferably provided on theirabutting ends tend to deflect theqcurrents of the gas at with interlocking complementary tongues a j cvarious an les both"transverselyfiand longi and grooves a to preventrelative vertical m tudinally t ron h the firebox. I make the movement of these abutting ends. The end l supporting brie s, members or spans of sufiisections of said span each consists of one of. cient'strength to support" their own (weight the span bricksa which is supported by a 1" andthe: weight of the superposed cover tube and is longer than the space between The ofiiee of a so-ealled front arch is to prevent the direct flow of gases and com bustible particles from the grate to the fiues and to 'force them .side sheets of the combustion to take length of the firebox,

sure uniform distribution of heat over substantially the whole interior of the firebox vbrickst'i' flfhej sizes of the spans er support- ,oss

firebox are determined by the position of and the distance between,

their points of support inthe firebox, i. e.,.t he spacing'of the tubes 9 and the distances between the sides of the box and the adjacent tubes. In

all cases, the several supporting and cover c i I bricks, as herein shown,

enough to be handled easily, and Without the tube and the 'side sheet, and consequently should be small supporting bricks the space between keep the back or the top of the arch smooth, upper edges of the 'supporting'bricks forming the bricks a with gains or with 'sllnkcnshoulders 10 for this purpose. Thesv cover bricks are preferably transversely shorter than the and I usually form them two adjacent arranged supporting bricks. This construction lends itself readily to the building of arches of varying lengths as it is only necessary tojmake the cover bricks longer or shorter, thusspacing the rows of supporting brickscloser 0r farther apart, and thereby roducin an arch of the desired length.

he cover bricks being comparatively liar-, be of. considerable ricks is provided with eep cavity or pocket Z). '6Xt8Il(l1I1g nearly the whole length and width thereof, and

the side sheets of the fire orming comparatiyely narrow edges or ribsb on its under surface. 7

construction serves two important functions, i that of lightening the cover bricks without materially reducing their strength and that of breakingup the top of the comparatively large cavity. between the supporting bricks and producing. a plurality of gas-mixing pockets and deflecting surfaces and cavities of smaller area. The row of cover bricks is coextensive with the supporting bricks and the outer members thereof preferably abut box-similar to the abutment therewit of the supporting bricks a.

The span bricks are provided with large,

tapered projections a extending flOITl'OHG transverse edge. These pro ections serve to space the first row of supporting bricks in position from the flue sheet and those on the.

upper end of the arch form' a serrated or notched edge thereon which seryes to break up and .nr -rmingle the currentssof gases passing over or around this edge. The opena comparatively itigsor spaces formed of bricks and the discharge'of cinders and ash from the of the arch in that t" gas currents tion of the the fueL;

One of the advantageous from th s construction .of

combustion, space ly enlarged over erab the-Mb the upwardly incline 1 sheets tov the bustion part purpose, of re bolts vWithout of the arch.

of the arch may be sired to work upon rbing the side portions depth of the conib-usox, due to. this gabled ivithout distu arch.

make it possible to elimin pr attachments to the sid members may be readil The increased tion part of the .fireb construction of arch, is able feature in a firebox of the fact. that and cheap help often necessarily approaches too close to ustion space is liable choked adjacent tothe flue are provided on-their results accruing arch is that the below the arch iscousidhigh temperature of the comof the pairing the disturbing And again,

and unski Although I have herein ing members to th disclosed, and the su shapes andrelations of vention vention to the and described. I aving-thus-descri claim as new? Patent:

1'. A. locomotive: boiler firebox having twoinclined arch or spans of the kind adapted e peculiar arrangement of arch tubes pporting members proered projections, it is rebox. gvardlyv inclined side, porti ate supportin lugs.

e sheet and th side y removed for the side sheets or staythe center portion the center portion deepfires are employed, and ifthe arch the grate the comto be clogged or n Also the upons of the arch of the articularly valuof this kind because often carried lled firemen are sheet.

shown su pport bed-my invention, I

and desire tov secure by Letters two rows of supporting bad and a row of cover bricks a sitio'n, and upon the tubes and wedgingly engaging'the 2o ported b sheet and forming a partial side of the-firebox, and each tubes therein, in combination bricks resting u and each comprising outer or end sections,- the centersectlon combricks com rising a pair of bricks resting upon the tu and'holding each other in potwo similar end bricks resting said br cks side sheets, the-under surface of being provided with large gas-mixing cavitheir. outer edges being provided with large tapered pro- 10 .jections, said cover bricks resting irregular contour, and

upon, ex-

tending between and spacing said support- 7 ing bricks apart and substantially filling the openin between saidro'ws of supporting bricks rom side to side of the firebox. 2. A locomotive firebox equipped with two inclined arch tubes, in combination with a refractory arch of abled form, comprisin a center section an two 'side sections, sai centersection consistingfoitwo parts supsaid tubes an and relatively held in position by each other and forming a centrallongitudinally disgable, each of theside se tions restingon a tube and abutting the adjacent side gable at cac said section hav-. ing a relativel large tapered projection on each of its en 3. A locomotive firebox with rality of arch spans supportedby said tubes and spaced apart, each said span comprising a center section and two outer or end sections, tlie center'section co 1 of two .a-sin lebrick supported by a tube incline upwardl and outwardlyagainst the respective si prisin e sheet, eachof saic j span bricks being provided with a single lar e tapered projection on its outer edge, an panel bricks extending between sai' spans spacing 'them apart, closing-the spaces 1 between respective spans and therewith coni- 9'45, pleting a i an arch. 4 a F 4 A- locomotive firebox ,lia

tubes, in combination with a arch spans supported by 'said tubes and spacedapart at different heights, said spans a center section and two "so "ash posed of two bricks and coverbricks,- leaning against h a ainst the ad having two arch n'and arched betweensaid tubes, and-each of the outer sections com- 1 by respective side sheets intermediate rowsbeing sup m hand, this at day of p urality of 1n the presence oftwo subscnbing w'itnesses.

abutting at their inner 7 ends and resting upon and arched between tubeand inclined upwardly an outwardly the adjacent side sheet, the lower span bricks havin large tapered (projections forcontactwith e flue sheet, an the upper span bricks each having a similar large tapered projection on its upper edge and panel or cover bricks extending between mid spans spacing them apart an closing the spaces between respective spans.

5. A locomotive. boiler firebox having a. pair of inclined circulating combination with a refractory body resting upon and supported by said tubes extending from side s eet to side sheet and resting against the flue sheet, said body comprising aplurality of transverse rows of supporting against bricks com osed of a center span of two bric s supported on-rcspective tubes and leaning .a 'ainst and interlocked with each other,;a end spans each including a single-brick raiding upon a tube andleamng acent side sheet, the inner e ge of the arch having a number of relatively large tapered pro ections arranged lie-- tween the" arch supports and adapted to consheet and hold the main tact with the flue and said part of the arch spaced cover bricks arranged between said spans re- I taining said spansin spaced relation and closing the openings between them.

sheets and longitudinal inclined arch tubes, in combination with aplurality of longitudinal rows of refractory bricks, the outer rows being arranged between and supported and tubes and the orted by said tubes, and theiglipcr rear en brick of each said longitudin row havingan'upwardly and ,rearwar dly extending projection, and

tubes therein, in

each row of supportmg. made up I said tubes, and each of the outer sections composed of a single brick supported by a locomotive boiler firebox, its side I its underside containing a gas-mixing pocket of irregular contour. 4

In tcstimonywhereof, I have hereunto set December," 1911,

CHARLES Gmann'r Hxwmr, Eowxro F,. Wn.sou. 

